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Add a default A record for each VM #60

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Add a default A record for each VM #60

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12 changes: 10 additions & 2 deletions pkg/zonemgr/internal/zone-file-cache/zone_file_cache.go
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Original file line number Diff line number Diff line change
Expand Up @@ -114,20 +114,28 @@ func buildARecordsArr(name string, namespace string, interfaces []v1.VirtualMach
IPs := iface.IPs
for _, IP := range IPs {
if net.IsIPv4String(IP) {
recordsArr = append(recordsArr, generateARecord(name, namespace, iface.Name, IP))
recordsArr = append(recordsArr, generateIfaceARecord(name, namespace, iface.Name, IP))
break
}
}
}
sort.Strings(recordsArr)
if len(recordsArr) > 0 {
recordsArr = append(recordsArr, generateDefaultARecord(name, namespace, recordsArr[0]))
}
return recordsArr
}

func generateARecord(name string, namespace string, ifaceName string, ifaceIP string) string {
func generateIfaceARecord(name string, namespace string, ifaceName string, ifaceIP string) string {
fqdn := fmt.Sprintf("%s.%s.%s", ifaceName, name, namespace)
return fmt.Sprintf("%s IN A %s\n", fqdn, ifaceIP)
}

func generateDefaultARecord(name string, namespace string, ifaceIP string) string {
fqdn := fmt.Sprintf("%s.%s", name, namespace)
return fmt.Sprintf("%s IN A %s\n", fqdn, ifaceIP)
}

func (zoneFileCache ZoneFileCache) generateARecords() string {
aRecords := ""
for _, recordsArr := range zoneFileCache.vmiRecordsMap {
Expand Down
35 changes: 26 additions & 9 deletions pkg/zonemgr/internal/zone-file-cache/zone_file_cache_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,8 @@ var _ = Describe("cached zone file content maintenance", func() {
nic4IP = "13.14.15.16"
IPv6 = "fe80::74c8:f2ff:fe5f:ff2b"

aRecordFmt = "%s.%s.%s IN A %s\n"
aRecordFmt = "%s.%s.%s IN A %s\n"
defaultARecordFmt = "%s.%s IN A %s\n"

updated = true
notUpdated = false
Expand All @@ -81,6 +82,11 @@ var _ = Describe("cached zone file content maintenance", func() {

aRecord_nic3_vm1_ns2 = fmt.Sprintf(aRecordFmt, nic3Name, vmi1Name, namespace2, nic3IP)
aRecord_nic4_vm1_ns2 = fmt.Sprintf(aRecordFmt, nic4Name, vmi1Name, namespace2, nic4IP)

defARecord_nic1_vm1_ns1 = fmt.Sprintf(defARecordFmt, vmi1Name, namespace1, nic1IP)
defARecord_nic2_vm1_ns1 = fmt.Sprintf(defARecordFmt, vmi1Name, namespace1, nic2IP)
defARecord_nic1_vm2_ns1 = fmt.Sprintf(defARecordFmt, vmi2Name, namespace1, nic1IP)
defARecord_nic3_vm2_ns1 = fmt.Sprintf(defARecordFmt, vmi2Name, namespace1, nic3IP)
)

validateUpdateFunc := func(vmiName, vmiNamespace string, newInterfaces []v1.VirtualMachineInstanceNetworkInterface,
Expand All @@ -102,7 +108,7 @@ var _ = Describe("cached zone file content maintenance", func() {
namespace1,
[]v1.VirtualMachineInstanceNetworkInterface{{IPs: []string{nic1IP}, Name: nic1Name}},
updated,
aRecord_nic1_vm1_ns1,
aRecord_nic1_vm1_ns1+defARecord_nic1_vm1_ns1,
1,
),
Entry("when non existing vmi is deleted",
Expand Down Expand Up @@ -142,8 +148,10 @@ var _ = Describe("cached zone file content maintenance", func() {
updated,
aRecord_nic1_vm1_ns1+
aRecord_nic2_vm1_ns1+
defARecord_nic1_vm1_ns1+
aRecord_nic3_vm2_ns1+
aRecord_nic4_vm2_ns1,
aRecord_nic4_vm2_ns1+
defARecord_nic3_vm2_ns1,
2,
),
Entry("when existing vmi is deleted",
Expand All @@ -160,7 +168,8 @@ var _ = Describe("cached zone file content maintenance", func() {
[]v1.VirtualMachineInstanceNetworkInterface{{IPs: []string{nic1IP}, Name: nic1Name}, {IPs: []string{nic4IP}, Name: nic4Name}},
updated,
aRecord_nic1_vm1_ns1+
aRecord_nic4_vm1_ns1,
aRecord_nic4_vm1_ns1+
defARecord_nic1_vm1_ns1,
2,
),
Entry("when existing vmi is not changed but its interfaces order is changed",
Expand All @@ -169,7 +178,8 @@ var _ = Describe("cached zone file content maintenance", func() {
[]v1.VirtualMachineInstanceNetworkInterface{{IPs: []string{nic2IP}, Name: nic2Name}, {IPs: []string{nic1IP}, Name: nic1Name}},
notUpdated,
aRecord_nic1_vm1_ns1+
aRecord_nic2_vm1_ns1,
aRecord_nic2_vm1_ns1+
defARecord_nic1_vm1_ns1,
1,
),
)
Expand Down Expand Up @@ -197,7 +207,9 @@ var _ = Describe("cached zone file content maintenance", func() {
aRecord_nic1_vm2_ns1+
aRecord_nic2_vm2_ns1+
aRecord_nic3_vm1_ns2+
aRecord_nic4_vm1_ns2,
aRecord_nic4_vm1_ns2+
defARecord_nic2_vm1_ns1+
defARecord_nic1_vm2_ns1,
3,
),
Entry("when existing vmi is deleted",
Expand All @@ -216,8 +228,10 @@ var _ = Describe("cached zone file content maintenance", func() {
updated,
aRecord_nic1_vm1_ns1+
aRecord_nic4_vm1_ns1+
defARecord_nic1_vm1_ns1+
aRecord_nic1_vm2_ns1+
aRecord_nic2_vm2_ns1,
aRecord_nic2_vm2_ns1+
defARecord_nic1_vm2_ns1,
3,
),
Entry("when existing vmi is not changed but its interfaces order is changed",
Expand All @@ -227,8 +241,10 @@ var _ = Describe("cached zone file content maintenance", func() {
notUpdated,
aRecord_nic2_vm1_ns1+
aRecord_nic1_vm1_ns1+
defARecord_nic1_vm1_ns1+
aRecord_nic1_vm2_ns1+
aRecord_nic2_vm2_ns1,
aRecord_nic2_vm2_ns1+
defARecord_nic2_vm2_ns1,
2,
),
)
Expand All @@ -246,7 +262,8 @@ var _ = Describe("cached zone file content maintenance", func() {
[]v1.VirtualMachineInstanceNetworkInterface{{IPs: []string{nic1IP, IPv6}, Name: nic1Name}, {IPs: []string{nic2IP, IPv6}, Name: nic2Name}},
updated,
aRecord_nic1_vm1_ns1+
aRecord_nic2_vm1_ns1,
aRecord_nic2_vm1_ns1+
defARecord_nic1_vm1_ns1,
1,
),
Entry("vmi interfaces contain IPv6 only",
Expand Down
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